double down片语动词KK [ˋdʌbəl daʊn] /ˈdʌbəl daʊn/发音片语动词1变本加厉、更加坚持、死不认错Instead of apologizing, he doubled down on his original claim.他不但没有道歉,反而更加坚持原来的说法。2加倍投入、加大力度The company is doubling down on clean energy this year.公司今年将加倍投入清洁能源领域。3加倍下注纸牌游戏He doubled down with eleven and drew a perfect ten.他拿到十一点时加倍下注,结果抽到一张十点。用这个字练口说→